HTS tariff line · chapter 38
3822.12.00
For Zika and other diseases transmitted by mosquitoes of the genus Aedes
Analysis
HTS 3822.12.00 covers for Zika and other diseases transmitted by mosquitoes of the genus Aedes under heading 3822 (diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory…).
There is no general-rate duty on this line, which puts it with roughly 25% of the 179 tariff lines in chapter 38 that are also free. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
The other lines in the same group are 3822.11.00 (diagnostic or laboratory reagents on a backing, prepared…, duty-free), 3822.13.00 (for blood-grouping, duty-free), 3822.19.00 (diagnostic or laboratory reagents on a backing, prepared…, duty-free) and 3822.90.00 (certified reference materials, duty-free).
Census statistics map these goods to NAICS 325413 (In-Vitro Diagnostic Substance Manufacturing), an industry of 267 US establishments employing 45,459 people, the industry a domestic producer of these goods reports under.
All 4 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 3822.11.00 | Diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits: for malaria | Free |
| 3822.13.00 | For blood-grouping | Free |
| 3822.19.00 | Diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits: other | Free |
| 3822.90.00 | Certified reference materials | Free |